Abrasive tool.



L. RAMSON.

ABRASIVE TOOL- APPLICATION mm m2. 191?. acumen mu: 8. 191a.

Patented July 23. 1918.

mo Manson, or LEQIIIA, MW ABBASIVE 'roon.

Specification 01' Letters Patent.

Patented July 23, 1918.

Application filed March 2, 1917, Serial No. 151,878. Renewed June at 1518. Serial No. new.

To all whom it may concern Be it known that I, LEO RAMSON, a citizen of the United States, residing at'Leonia, county of Bergen, State of New Jersey have made a certain new and useful Invention in Abrasive Tools, of which the following is a specification.

This invention relates to abrasive tools.

The object of the invention is to provide a tool with an abrasive edge or surface which is simple in structure, efficient in operation and economical of manufacture.

A further object of the invention is to provide a tool of the character described wherein the cutting surfaces will not become clogged, and which can be renewed.

A further object of the invention to provide an adjustable abrasive edge for a tool of this nature which may be shifted at will to the desired contour.

A further object of the invention is to provide a tool of the class described wherein horizontal adjustment of the abrasive edge may be secured.

u-rther objects of the invention will appear more fully hereinafter.

The invention consists substantially in the construction, combination, location and relative arrangement of parts, all as will be more fully hereinafter set forth, as shown by the accompanying drawing, and finally pointed out in the appended claims.

Referring to the drawing,

Figure 1 is a view in side elevation of a tool embodying my invention.

Fig. 2 is a top plan view of the same.

Fig. 3 is a bottom plan view of the same.

Fig. 4 is a sectional View taken on the line 4-4 Fig. 2 and looking in the direction of the arrows,

Fig, 5 is a sectional view taken on theli'ne 5-5 Fig. 4 and lookingin the direction of the arrows. N

The same part is designated by the same reference numeral. wherever it occurs throughout the several views.

In the use of rasps, files, or abrasive tools of like nature for. metal. or woodwork, various disadvantages have beenv met with in the art, chief among which. are

First:-The filings become clogged in the 5: ace Between the rough ed es of the tool.

his is particularl true in t e case of files. Further, after afie or rasp or other abrasive tool heretofore used has become worn, due to use or any other reason, the file or rasp becomes useless and requires the purchase of a new tool. Furthermore, the cutlng or abrasive edge of the tool always remains the same in cstttflur, and oonsegue tly to secure the various shapes r. aired in worlr of this nature, a number 0 tools of varying contours is required.

It is among the special purposes of my present invention to prov de an abrasive tool, the cutting or abrasive edge of which will not become clogged due to use or Wear, and can be readil replaced in standard form and sizes a to ,l bvide means associated therewith, to l ew the eutt'ng or abrasive edge of the tool to be adjusted from concave to convex at will. Be wing to the drawing as illustrating on einodiment of my invention, I provide a 1, provided with an end portion adapted to receive a handle 3. is may be attached in many ways, but I show a imple way wherein the handle 3 is screwed tothe e d of the portion 2 of the base orhoi er 1. 'I f re base 1 is provided along. one edge thereof with a plurality of l'ugs' t formed integral therewith and the base 1 at the portions thereofat wh-ic1 the lugs 4 are located, provided with a semi-circular channel indicated at 5. Passing through the cha ml 5 are 6 provided w th a log, head? a; one nd thereof, and the 0 her end thereo being adapted to receive a tomb wit 8. Between the big 4: of the holder 1 and the lug head, ,7 f the bolt 6, at the respective ends of the hol er 1', nd Suspended by a rotatable pin extending plur ity 9 bl s therehetween Ipr de a m b a s ma b ef any indicated at 10". structure or material for t e purposes quire'dof the t'oo1',but' f acksaw blades he afioentcheaa and sa isfa tery for thi purp se. These-hacle'savvhlad efs are-prev; at! nit tlieusual saw teetli', and are suspemed between th ins 9 in substantially p er-an i relation to other nigh their rtistes d 'e tending o njwa d y relative atlas as 1! a ih '5' but on o e side a inst t e lugs L of t head of the 501i ajdare as elafi in, i s n a as th t a 81 changing the cutting contour of the tool from cxtri-une convex in extreme concave, and to all intermediary shapes. I show one simple Way,o f accomplishing this wherein he pins 9 which suspend the blades 10 between "the ends of the'holder l are bent r eccentric as seen in Figs. 5 and I"). One end of the pins 10 is provided with a. square head 11 to allow the said pin to be rotated. It will be seen that by rotating either one or both of the pins 10, the blades may be adjusted vertically relative to each other to a great number of shapes ranging from extreme concave, slight concave, to slight convex and extreme convex. This is a very desirable feature in tools of this nature in that, with but a singl tool an adjustment is secured which allows the same tool to be used, where heretofore a number of tools have been required.

As heretofore stated it is among the ob jeets of my invention to provide means of preventing the cutting surl'arc ol' the tool from becoming clogged by the material being Worked on. In the ei'nbruliuu-nt of my invention shown, I accomplish this by suitably spacing the blades 10 from each other thereby allowing a space between each pair of blades through which the filings may pass without clogging the cutting edge of the tool. I accomplish this result by inserting what I may term spacing lugs between the respective blades. These spacing lugs may be placed anywhere throughout the length of the tool, but I find it convenient to place the same at one or more of the clamping bolts, according to the particular adjustment required. For example, when it is desired to space the blades 10 on the pins 9, I provide rings 12, see Fig. at, which I mount on said pins in the desired number between the respective blades according to the [space required or desired. If desired Or reguired, spacin lugs 13 may also be provi ed in any desired number or size be tween the respective blades at the portions thereof held to the body 1 by the clamps composed of the bolt and thumb nut 6 and 8 arid thelugs 4, Thus it will be seen that I providemeansfor the horizontal adjustment ofthe bl'ades and this prevents the piece or material being worked on becoming scarred due to continualseraping thereon by the spaced abrasive blades of the tool, by allowing said blades to be bulged at their centers re ative to each other to present a longitudinally curved cutting edge rather than a stra ght line cutting edge as will be readily understood by those skilled in the art.

Another simple way of bulging the blades and to tliQreby reventtgroo-ved Work and alsoto enable t e worklto be finished HP to a close edge the thumb nut 8 in the center portion of the body 1 may be loosened, and the bolts (Lu ay be turned out of :lb t l-I l also provide means for locking the pins '11 in their various adjusted posit ions. \Vlii l this may be accomplished in many ways, .i show one arrangen'ient wherein I provide what I may term a locking lug 1i providci'l with an aperture at the end thereoi ada iti-al to fit over the square head ll of t 1e pin t). 'lhcse lugs it are carried by the bolts (3 at the rce wctive ends of the holder 1 and are clamped iulo locked position relative to (be square head ll of the pins 9 by means of the thumb nuts 9..

To facilitate the handling of tintoo] in operation, I provide an auxiliary haudl'u illustrated at 16, which may be of any size. shape or material. In practice, i prefer to curve this handle as shown at 17 to accom niodatc the thumb of the operator. In the forms shown the auxiliary handle 16 is mounted upon, and secured to the body 1 by a screw 18 to permit a swivel movement of the handle thereon. To accommodate the auxiliary handle 16 the base 1 may be built up as shown in 2 pieces suitably secured together, for example, by solder. My invention is not to be limited to any particular type or form of auxiliary handle, as the same may be dispensed with entirely if desired.

While I have shown and described in de tail a specific structure embodying my in vention, I wish it to be understood that my invention as defined in the claims is not to be limited or restricted to any specific detail as to structure thereof, as many changes will readily occur to those skilled in the art. Therefore, what I claim is new and useful and of my own invention, and desire to secure by Letters Patent is,

1. An abrasive hand tool comprising a holder, a plurality of abrasive elements carried by said holder, means for adjusting said element vertically relative to each other to vary the contour of said tool from concave to convex and a handle for said tool.

2. An abrasive hand tool comprising a l 7 holder, a plurality of abrasive elements carried b said holder, and means for adjustin said e ements horizontally relative to eac other and a handle for said tool.

3. An abrasive hand tool comprising a i I holder, a lurality of abrasive elements carried by said holder and means for adjustin said elements vertically relative to cool? other to vary the contour of said tool from concave to convex, and means for varying the space between said elements and a handle for said tool.

4. An abrasive hand tool comprising a holder, a plurality of abrasive elements carried by said holder, and means for adjusting said elements vertically relative to each other to vary the contour of said tool from co n-ave to convex and means for varying the space between said elements at various points throughout their length, and a handle for said tool.

5. An abrasive hand tool co1n )rising a holder, a plurality of blades each provided villi an abrasive edge, means for securing said blades to said holder and means for shifting the position of said securing means to change the cutting contour of said tool from concave to convex and a handle for said tool.

6. An abrasive tool comprising a holder, a plurality of blades each provided with an abrasive edge means including eccentric pins upon which said blades are mounted for securing said blades to said holder, and means for rotating said pins.

7. An abrasive tool comprising a holder, a plurality of blades each provided with an abrasive edge means including eccentric pins upon which said blades are mounted for securing said blades to said holder, and means for rotating said pins, and means for lock ing said pins in position.

8. The combination with a plurality of blades and a holder, a handle for said holder, of means for securing said blades to said holder comprising clamping devices, and means carried by said clamping devices for *ariably adjusting the space between said blades.

9. In a tool of the class described, the combination with a holder provided with ofi' set pins at its respective ends, and with side lugs intermediate its ends, of a plurality of substantially parallel abrasive elements carried by said pins to extend substantially the length of said holder, the outer of said plurality of elements abutting against said lugs, and adjustable means for clamping said elements against said lugs.

10. An abrasive hand tool comprising an abrasive surface, and means for varyin at will the contour of said abrasive sur ace from extreme concave to extreme convex or intermediate contours and a handle for said tool. I

11. An abrasive hand tool comprising a holder, a plurality of abrasive elements carried by said holder, and means for adjusting said elements vertically relative to each other to vary the contour of said tool from concave to convex, and a removable handle for said holder.

12. An abrasive hand tool comprising a holder, a handle for said holder, a plurality of abrasive elements carried by said holder, and means for adjusting said elements vertically relative to each other to vary the contour of said tool, a ren'iovable handle for said holder, and an auxiliary handle carried thereby.

13. In a tool of the class described, the combination with a holder provided with off set pins at its respective ends, and with side lugs intermediate its ends, of a plurality of sul'istantially parallel abrasive elements carried by said pins to extend substantially the length of said holder, the outer of said plurality of elements abutting against said lugs, and removable bolts provided with a thumb nut for clamping said elements against said lugs.

14. In a tool of the class described, the combination with a holder provided with off set pins at its respective ends, and with side lugs intermediate its ends, of a plurality of substantially parallel abrasive elements carried by said pins to extend substantially the length of said holder, the outer of said plurality of elements abutting against said lugs, and removable bolts provided. with a thumb nut for clamping said elements against said lugs, and means carried by said bolts for varying the space between said elements.

In testimony whereof I have hereunto set my hand on this 26th day of February, A. D., 1917.

LEO RAMSON.

Copie: of thin patent may be obtained for an cent: each, by addreuing the "communion: of Iltenh, Wuhlnzton, 2D. 0. 

